Potato brush



FIG. 1 is a perspective view of potato brush showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left-hand view thereof;

FIG. 4 is a right-hand view thereof;

FIG. 5 is a back view thereof; and,

FIG. 6 is a top view thereof.

The broken lines showing bristles illustrate portions of the potato brush that form no part of the claimed design. 

The ornamental design for potato brush, as shown and described. 